[ Vocabulary ]
fossil fuel; formed from the remains of small marine plants and animals buried under heat and pressure
A. coal
B. oil
C. natural gas
D. nuclear energy
E. renewable resource
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Grammar Present Perfect (ever never)Personal pronouns + possessive adjectives + Introgative pronounsThe Future Simple TensePast Continuous and Past Simple TenseDirect and Indirect SpeechClauses and ConjunctionGrammar ModalsPast form of ModalsMixed TensesAcademic VocabularyOther quiz:
Mixed General Quiz › ViewIf California were a country, its economy would be the eighth ___ in the world.
a. large
b. largest
c. larger
Grammar › View
I saw a car crash when I ______ for the taxi.
A. wait
B. were waiting
C. was waiting
D. was waited